O Henry was a famous American short story writer who was known as one of the "Three Masters of Short Story". His works were usually known for their humor, irony, bizarre plots and unexpected endings. He had a unique literary style and narrative skills. O. Henry's works were mostly published in the 1920s and 1930s, and some of them became classic works such as The Last Leaf and The Gift of the Magi. His works usually had profound social meanings and irony, but also showed the complexity and contradiction of human nature. O. Henry's works were widely praised and had been adapted into movies, television dramas, stage plays, etc., which influenced many artists and audiences. His achievements and influence were widely recognized and respected not only in the field of literature but also in many fields such as art, culture and society.